Detoxification of wastewater containing pharmaceuticals using horizontal flow bioelectrochemical filter

Pun, Á. and Boltes, K. and Letón, P. and Esteve-Núñez, A. (2019) Detoxification of wastewater containing pharmaceuticals using horizontal flow bioelectrochemical filter. Bioresource Technology Reports, 7. p. 100296. ISSN 2589-014X

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Abstract

Removal of a mixture of 13 pharmaceutical compounds was investigated in this work in a horizontal subsurface flow electroconductive filter. Biofilter was constructed using electroconductive carbon with capacity for allowing the electron flow between microbial communities at different redox environments; under a configuration called snorkel. Stable operation was observed during 200 days, with medium values for COD and N-NH4 removal of 92 ± 3% and 70 ± 10%, respectively under different organic loading rates. Most of the pharmaceuticals tested were removed above 90% (seven compounds) at HRT of 1 day while 65% were removed at HRT as low as 0.5 days. These results were corroborated by analysing the detoxification efficiency of the biofilter using microcrustaceans and a green alga as bioreporters. Results revealed that effluents were detoxified in 80% for HRT of 0.5 days. Electroconductive biofilter was proved as a promising technology for the elimination of emerging pollutant from wastewater with minimum operational requirements.

Item Type:	Article
Uncontrolled Keywords:	Microbial electrochemical technology; Pharmaceuticals; Mixture toxicity; Biofilter
Subjects:	Q Science > QD Chemistry T Technology > TD Environmental technology. Sanitary engineering
Depositing User:	Belén Barroeta
Date Deposited:	09 Sep 2019 10:04
Last Modified:	09 Sep 2019 10:04
URI:	http://eprints.imdea-agua.org:13000/id/eprint/1071

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